ARIA User Agent Implementation Task Force (UAI TF) Work Statement

UAI TF is a joint task force of the Protocols and Formats Working Group (PFWG) and the HTML Working Group (HTML WG). It assists these Working Groups with the work identified below.


This work statement has been accepted by the PFWG and the HTML WG. The task force is active.


The objective of UAI TF is to develop guidelines for interoperable user agent implementation of the WAI-ARIA specification. Because user agent implementation of ARIA creates an impact on other languages supported by the user agent (notably, HTML and XHTML), the guidelines require cooperative development between maintainers of multiple technologies, and should not be sequestered within the Protocols and Formats Working Group.

Accordingly, the UAI TF operates under the PFWG charter and the HTML WG charter. Documents about WAI-ARIA will be published by PFWG. Documents about HTML5 by will be published by the HTML WG.


  1. WAI-ARIA User Agent Implementation Guidelines, as a deliverable of the PFWG. This would be a Working Group Note and include a mapping of ARIA features to accessibility API features or some neutral abstraction. It is separate from the ARIA specification, but (if the User Agent Implementation Guidelines is on the Recommendation track) both documents should reach CR at the same time, as the user agent implementation guidelines is needed to document implementation experience for ARIA.
  2. Mapping of HTML features to accessibility API features, as a deliverable of the HTML WG. The mapping needs to be developed together with the ARIA mapping in the previous deliverable, in order to ensure that the recommendations of these two mappings are consistent. This may be subsumed into one or another of the HTML5 deliverables.
  3. The tests that are used to get WAI-ARIA through CR, as a deliverable of the PFWG.
  4. The tests that are used to get HTML5 through CR, as a deliverable of the HTML WG.

In addition to the above deliverables, the task force works on the following:

Work approach

UAI TF communications are publicly visible. Communication mechanisms for UAI TF include:

  1. E-mail discussion takes place on the wai-xtech mailing list [wai-xtech archives]. Please add the prefix "[AAPI]" to your messages to separate threads from other topics on the list.
  2. Weekly (or more frequently, as needed) teleconferences; minutes from the teleconferences are sent to the mailing list;
  3. Discussion in IRC channel #aapi;
  4. Monthly (or more frequently, as needed) updates and feedback in PFWG and HTML WG teleconferences, as appropriate;
  5. Issues are tracked in W3C Bugzilla. Use the Product "ARIA" and the Component "Platform APIs" for all issues relevant to this task force. Search for task force issues.
  6. Some documents are available from the wiki. Relevant documents are tagged with the category "ARIA User Agent Implementation Guide".

The Task Force allows focused work on particular deliverables of the PFWG and the HTML WG. The Task Force does not represent consensus of either of those WGs. All output of the Task Force should be considered as proposals, subject to vetting and modification by the WG receiving the proposal. Only once formal consensus of the WG is given does the deliverable satisfy charter requirements of the WG.

HTML5 documents may have normative dependencies on WAI-ARIA documents, but not the reverse.


UAI TF participants must be members of either the PFWG, the HTML WG, or another W3C Working Group. This requirement ensures that all participants have accepted the W3C Patent Policy.

Participants must actively contribute to the work of UAI TF, including:

  1. 6 to 8 hours per month of UAI TF work;
  2. Remain current on the UAI TF mailing list and respond in a timely manner to postings;
  3. Participate in UAI TF telephone meetings, or send regrets to the UAI TF mailing list.

Contact Michael Cooper to become a participant of UAI TF or with questions.

Members of the public who are not covered by the W3C Patent Policy can send input to the public-pfwg-comments mailing list [public-pfwg-comments archive], or the public-html-comments mailing list [public-html-comments archive]. Messages should clearly indicate the deliverable to which they are related and that they are relevant to the work of the UAI TF.


Staff contacts from the respective WGs oversee attention to W3C Process with respect to the chartered requirements of the respective WGs. The facilitator sets agenda, leads meetings, determines consensus, and is the primary liaison to the WGs.


The Task Force participants as of the last update to this page are:

  1. David Bolter
  2. Michael Cooper
  3. Joshue O'Connor
  4. Gregory Rosmaita
  5. Janina Sajka
  6. Cynthia Shelly
  7. Andi Snow-Weaver
  8. Alexander Surkov

Last updated on $Date: 2010/09/14 16:59:51 $ by $Author: cooper $

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